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Wael Osama

How routers select best routes ?

Routers select best routes based on the following criteria: Longest prefix match: Routers select routes with the longest match to the destination address in the forwarded packet. For example if a packet is destined to 192.168.12.1 and the router has 192.168.0.0/16 and 192.168.12.0/24 in its routing table, it will forward …

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What is: IP unnumbered?

IP unnumbered is method that you can use to enable IP processing on a Point to Point interface without assigning an it an IP address to conserve the IP address space. All you need to do, is to select an interface that you are going to borrow its IP address; …

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How-to:Configure PPP authentication Part2 (CHAP)

The second and the most secure authentication method in PPP is CHAP. CHAP stands for challenge Handshake Authentication Protocol. How CHAP works? If CHAP is negotiated successfully during the LCP phase, the authenticator sends a challenge message to the peer. The peer responds to the challenge with a value calculated …

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How-to: Configure PPP authentication Part1 (PAP)

PPP has two different authentication methods, in today’s post we are going to explore the first method which is PAP. PAP stands for Password Authentication Protocol which is a simple authentication method. PAP is considered an insecure method because the password is sent in clear text format over the PPP …

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PPP in brief

The Point-to-Point Protocol (PPP) provides a standard method for transporting multi-protocol packets over point-to-point links between two peers. In order to establish a communication link between two peers, each end of the PPP link must first send LCP packets to configure and test the data link. After the link has …

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